$ git clone -n https://src.fedoraproject.org/rpms/python-justbytes.git /var/lib/mock/f45-build-31232-651/root/chroot_tmpdir/scmroot/python-justbytes
Cloning into '/var/lib/mock/f45-build-31232-651/root/chroot_tmpdir/scmroot/python-justbytes'...
$ git fetch origin cf33c6c4189493b441ab9741a6c34ed932cc2124:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-justbytes
 * [new ref]         cf33c6c4189493b441ab9741a6c34ed932cc2124 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf33c6c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild